Why it works: Sugar and lemon are a kitchen classic. They rank in the top 18% of all ingredient pairs, and cooks put them together in 53,532 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓
Filling for Lemon Pie Cake and Washington Pie
Ingredients
Directions
Make the custard
Mix sugar and corn starch or flour.
Drop the teaspoon of butter on the mixture.
Pour the boiling water over gradually, stirring.
Boil up well.
Add 2 or 3 tablespoons to the yolk of egg, stirring.
Add the yolk to the mixture and cook like custard.
Finish and assemble
Remove from fire.
When partially cooled, add flavoring.
Use for the filling of a cake with whipped cream on the top.
Nutrition, whole recipe (rough)
Counts 4 of 5 ingredients. The other 1 aren't in our nutrition table and add nothing above, so the real totals are higher.
What these numbers assume: 4 portions
| Ingredient | Portion assumed | kcal |
|---|---|---|
| Egg | 1 large egg (50g) | 78 |
| Sugar | 1 tbsp (12.5g) granulated | 49 |
| Lemon | juice of 1 lemon (48ml) | 12 |
| Salt | 1 tsp (6g) | 0 |
| Water | not in our table | 0 |
One typical portion per ingredient; the recipe's quantities are not counted. A rough guide only, not for medical or dietary planning.
Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures. See the original page.
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.
-
Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Egg + lemontop 19% of all pairsSmell alikelowCooked together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
-
Sugar + eggtop 21% of all pairsSmell alikemoderateCooked together122,807 recipes
Shared aroma: 2-nonenal (fatty, green).
Sugar and lemon barely smell alike, yet cooks put them together in 53,532 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Sugar
- Sweetens the filling and helps balance the lemon flavor.
- Corn starch or flour (in the method)
- Thickens the mixture as it boils, giving the filling body.
- Egg yolk
- Thickens and enriches the custard as it cooks.
- Butter (in the method)
- Adds richness and a smooth, silky mouthfeel to the filling.
- Lemon extract
- Adds concentrated lemon aroma and flavor after cooking.
The step that matters
Adding the hot mixture to the yolk. Adding 2 or 3 tablespoons of the hot mixture to the yolk while stirring warms the yolk gradually. Pouring it in all at once can scramble the egg, leaving the custard lumpy instead of smooth.
Swap the lemon
How well each one fits the dish's main ingredients (sugar, egg):
- Vanillafits better
- Raisinfits about as well
- Lemonthe original
- Datesfits less well
Fit is the average pairing score against sugar, egg. Candidates are from the same food group and used in at least 100 recipes.
“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.
You might also like
Delicate Cake246 recipes
Boiled Frosting69 recipes
Citron Cake68 recipes
Scotch Cake63 recipesThe free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.